Who develops VS Website? grr

Don't you just love the VS website!
I've had so many problems with the thing of late I'm close to giving up. Firstly when trying to book specific dates it sometimes gives me the wrong day [:0]
Then it lost all my bookings [:0]
Now it has decided to change my seat requests to right at the back of the bus, despite me changing these to row 35 several months ago [V]
I don't mind them being changed for a real operational reason at the airport or for a plane swap. It does just appear that my seats have vanished.
So, who develops the site and can we get them replaced!!
[Edited to correct my terrible English!]
I've had so many problems with the thing of late I'm close to giving up. Firstly when trying to book specific dates it sometimes gives me the wrong day [:0]
Then it lost all my bookings [:0]
Now it has decided to change my seat requests to right at the back of the bus, despite me changing these to row 35 several months ago [V]
I don't mind them being changed for a real operational reason at the airport or for a plane swap. It does just appear that my seats have vanished.
So, who develops the site and can we get them replaced!!
[Edited to correct my terrible English!]